The pharmacological name of Sildenafil Citrate is PDE5-inibitor. After oral administration, this drug significantly brings down the levels of PDE5, a naturally secreting enzyme.
With the inhibition of PDE5, the body experiences elevation in two vital chemicals viz. cyclic Guanosine Monophosphate and Nitric Oxide. Increment in these chemicals relax the penile muscles and dilate the arteries for improving the blood flow in the erectile tissues.
Eventually, the penile organ receives adequate amount of blood for rigid and durable erection. This is how Sildenafil Citrate chewable tablet plays a role in restoring a man's sexual function.